I have some resources I must access with SSL that use self-signed certificates. In general, most tools have a simple setting to allow these to be accessed without error or just a warning. However, it seems like the proper way to do this with the JVM is to import the signing certificate into a keystore as a CA.
I have a groovy script I'd like to use, but I'd prefer my script to work standalone on any any JVM without modifying the keystore or distributing a new keystore. Is there a simple way to override the certification verification?
After a bit of research, I found this post. Here's what I ended up using:
import javax.net.ssl.HostnameVerifier
import javax.net.ssl.HttpsURLConnection
import javax.net.ssl.SSLContext
import javax.net.ssl.TrustManager
import javax.net.ssl.X509TrustManager
def nullTrustManager = [
checkClientTrusted: { chain, authType -> },
checkServerTrusted: { chain, authType -> },
getAcceptedIssuers: { null }
]
def nullHostnameVerifier = [
verify: { hostname, session -> true }
]
SSLContext sc = SSLContext.getInstance("SSL")
sc.init(null, [nullTrustManager as X509TrustManager] as TrustManager[], null)
HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory())
HttpsURLConnection.setDefaultHostnameVerifier(nullHostnameVerifier as HostnameVerifier)
Use at your own risk: this subverts certificate verification!
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